Three Workers' Party MPs are facing a second lawsuit, this time over claims relating to Punggol East, a constituency now in the hands of the People's Action Party.

Party chief Low Thia Khiang, party chairman Sylvia Lim and party treasurer Pritam Singh are being sued by Pasir-Ris Punggol Town Council (PRPTC), which now manages the affairs of Punggol East. The trio, who are MPs of Aljunied GRC, have also been sued by the Aljunied-Hougang Town Council (AHTC).

Both lawsuits are linked to the $33 million spent between July 2011 and July 2015.

AHTC wants the MPs to account for the sum and to repay any money which was wrongfully paid out.

The money was allegedly paid improperly to AHTC's former managing agent FM Solutions and Services (FMSS).

FMSS, its owner How Weng Fan and two other town councillors - ex-member of the WP Youth Wing executive committee Chua Zhi Hon and WP's deputy organising secretary Kenneth Foo - are also included in both lawsuits.